Three columns of volcanic rock shoot out of the ocean.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

An encyclopedic collection of mammal penises.

Medicinal spa created with the discharge from a geothermal energy plant.

The crumbling remains of a 19th century fortess.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

Electrical pylon in the shape of Disney's beloved mouse.

An octet of classic chrome trailers speared into the ground act as a tribute to the silver bullets of the open road.

Once an unstoppable source of gold and silver, this town came to a grinding stop when the groundwater proved deadly.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

Healing Springs that once ran red with soldiers' blood.

Live long and prosper in Tennessee.

A bizarre roadside attraction and the first instance of miniature golf in the world.

This "Plant Farm Museum" is home to the divinely inspired and visionary outsider artwork of Reverend Howard Finster.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

A stockpile of childhood lunch pails turned collectibles.

Site of a former hidden treehouse in New Orleans.

New Orleans' famous cemetery, located on the site of a former race track.

This racially troublesome eatery thought a new coat of paint could erase its offensive connotations.

The LSU mascot lived on the college campus in one of the most impressive tiger habitats in the country.

A museum of unusual collections, mini-towns, and a half-dog, half-alligator.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

This intricate Hindu temple is the largest of its kind outside of India itself and was constructed like a giant puzzle.